34 Subtype frequencies and demographic characteristics of juvenile idiopathic arthritis in Batna, Algeria

Abstract Background Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in childhood. There is a disparity in the prevalence of Juvenile idiopathic arthritis (JIA) subsets between different geographical areas or ethnic groups. In Arabic and African populations, data describing JIA are scarce. However, the epidemiological studies remain the best tool to understand the disease and to improve its management. Objectives To determine subtype, frequency, demographic and clinical features of JIA in Batna -Algeria- and to compare the findings with other JIA populations worldwide. Methods A multicentre retrospective descriptive study was conducted in Batna health centers (public and private sectors), over a seven-year period from January 2013 to December 2019, based on data collected on JIA patients. As public sector source, we referred to the department of pediatrics of the university hospital center (CHU Benflis Touhami Batna), and as private sector source, we referred to private adult rheumatologists based in Batna. The studied variables were: gender, age at the initial symptoms, age at diagnosis, JIA subtype based on International League of Associations for Rheumatology (ILAR) criteria, symptoms at onset, disease duration at the latest follow up, presence of uveitis, auto antibodies (antinuclear antibodies, Rheumatoid Factor and anti-CCP) pattern, joint imaging results, JIA status at the time of enrolment and the latest follow-up. Results The study included a total of 69 cases of JIA that were being followed in Batna health centers over the study period. The female to male ratio was 1.83. The median age at diagnosis was 9 years (range 1–16). Forty-six patients (72%) were diagnosed within the first year after disease onset. At the latest follow-up, the median disease duration onset was 1 year (range 1–8 years). There were 34 oligoarthritis (49.3%), 9(13%) rheumatoid factor (RF) negative polyarticular JIA, 8(11.6%) RF positive polyarticular JIA, 6(8.7%), systemic arthritis, 6(8.7%) enthesitis-related arthritis, 3(4.3%) psoriatic arthritis and 3(4.3%) undifferentiated arthritis. Nine patients (18.7%) were anti-nuclear antibody (ANA) positive, and 21 patients (30.4%) had indeterminate ANA status. Conclusion Oligoarthritis was the most common JIA subtype in our study. The RF positive polyarthritis frequency was higher than in literature. Prospective multicentre studies are necessary to better identify the JIA peculiarities in our country. Disclosure of Interest None declared


Background
Oligoarticular juvenile idiopathic arthritis (JIA) is a rare inflammatory disease that occur in children under the age of 16. JIA associated uveitis is the most frequent extra-articular manifestation. The uveitis can be sight-threatening and may be associated with disabling morbidity. The uveitis seen in JIA is chronic anterior uveitis which is always asymptomatic in the initial stage. Objective To report the incidence of uveitis in oligoarticular JIA and to determine the potential risk factors for the occurrence of uveitis in children with oligoarticular JIA.

Results
We retrospectively evaluated 95 consecutive pediatric patients with oligoarticular JIA in the paediatric emergency and outpatient department of the children's hospital in Tunisia between January 2005 and December 2021. 70 patients were included in this study. A total of 12 cases (17.1%) with oligoarticular JIA associated uveitis where identified. The incidence of uveitis in these children was 0.7 cases per year. The uveitis had occurred before the joint manifestations in only one patient. The average time between the onset of symptoms and the occurrence of uveitis was 1.7 years with a maximum time interval of 5 years. Management of JIA-associated uveitis involved use of topical agents in half of our patients and systemic agents in the other half. JIA-associated uveitis has led to ocular complications such as cataracts (n ¼ 5), glaucoma (n ¼ 6), anterior/posterior synechiae (n ¼ 8), and ultimately a visual impairment and blindness (n ¼ 1). Eleven of the twelve patients with uveitis had acceptable visual acuity. The presence of antinuclear antibody (ANA) was identified as a risk factor for the occurrence of uveitis (p ¼ 0.03).

Conclusion
Collateral damage of oligoarticular JIA include growth failure, muscle atrophy and intraocular damage. The main challenge during the management of oligoarticular JIA is the early detection of uveitis. Multidisciplinary management by the rheumatologist and the ophthalmologist is essential to optimize outcome. Background Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in childhood. There is a disparity in the prevalence of Juvenile idiopathic arthritis (JIA) subsets between different geographical areas or ethnic groups. In Arabic and African populations, data describing JIA are scarce. However, the epidemiological studies remain the best tool to understand the disease and to improve its management.

Objectives
To determine subtype, frequency, demographic and clinical features of JIA in Batna -Algeria-and to compare the findings with other JIA populations worldwide. Methods A multicentre retrospective descriptive study was conducted in Batna health centers (public and private sectors), over a seven-year period from January 2013 to December 2019, based on data collected on JIA patients. As public sector source, we referred to the department of pediatrics of the university hospital center (CHU Benflis Touhami Batna), and as private sector source, we referred to private adult rheumatologists based in Batna. The studied variables were: gender, age at the initial symptoms, age at diagnosis, JIA subtype based on International League of Associations for Rheumatology (ILAR) criteria, symptoms at onset, disease duration at the latest follow up, presence of uveitis, auto antibodies (antinuclear antibodies, Rheumatoid Factor and anti-CCP) pattern, joint imaging results, JIA status at the time of enrolment and the latest follow-up.

Conclusion
Oligoarthritis was the most common JIA subtype in our study. The RF positive polyarthritis frequency was higher than in literature. Prospective multicentre studies are necessary to better identify the JIA peculiarities in our country.

Background
Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in childhood and is usually treated with nonsteroidal anti-inflammatory drugs or disease-modifying anti-rheumatic drugs. The outcome in patients with JIA has markedly improved with the advent of biologic drugs.

Objectives
The aim of this study was to describe treatments prescribed for children with JIA in Batna, Algeria. Methods A multicentre retrospective and descriptive study was conducted in Batna health centers (public and private sectors), over a seven-year period from January 2013 to December 2019, based on (JIA patient's data collection). As public sector source, we referred to the department of pediatrics of the university hospital center (CHU Benflis Touhami Batna), and as private sector source, we referred to private adult rheumatologists based in Batna.